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dc.contributor.authorGaspar Fàbregas, Kàtia
dc.contributor.authorCasals Casanova, Miquel
dc.contributor.authorGangolells Solanellas, Marta
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
dc.date.accessioned2019-04-29T10:00:15Z
dc.date.available2019-04-29T10:00:15Z
dc.date.issued2016-10-15
dc.identifier.citationGaspar, K.; Casals, M.; Gangolells, M. A comparison of standardized calculation methods for in situ measurements of facades U-value. "Energy and buildings", 15 Octubre 2016, vol. 130, p. 592-599.
dc.identifier.issn0378-7788
dc.identifier.urihttp://hdl.handle.net/2117/132231
dc.description.abstractIn recent years, a growing concern has been how to determine the actual thermal behaviour of façades in their operational stage, in order to establish appropriate energy-saving measures. This paper aims at comparing standardized methods for obtaining the actual thermal transmittance of existing buildings’ façades, specifically the average method and the dynamic method defined by ISO 9869-1:2014, to verify which best fits theoretical values. The paper also aims to promote the use of the dynamic method, and facilitate its implementation. Differences between the theoretical U-value and the measured U-value obtained using the average and dynamic methods were calculated in three case studies, and then compared. The results showed that differences between the theoretical and the measured U-value were lower when the dynamic method was used. Particularly, when testing conditions were not optimal, the use of the dynamic method significantly improved the fit with the theoretical value. Moreover, measurements of the U-value using the dynamic method with a sufficiently large dataset showed a better fit to the theoretical U-value than the results of other dynamic methods proposed by authors. Further research should consider the optimum size of the dataset to obtain a measured U-value that is correctly adjusted to the theoretical U-value.
dc.format.extent8 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis::Aïllament acústic i tèrmic
dc.subject.lcshInsulation (Heat)
dc.subject.lcshFacades
dc.subject.otherU-value calculation
dc.subject.otherThermal transmittance
dc.subject.otherAverage method
dc.subject.otherDynamic method
dc.subject.otherIn-situ measurements
dc.subject.otherFacade
dc.titleA comparison of standardized calculation methods for in situ measurements of facades U-value
dc.typeArticle
dc.subject.lemacAïllament tèrmic
dc.subject.lemacFaçanes
dc.contributor.groupUniversitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
dc.identifier.doi10.1016/j.enbuild.2016.08.072
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
local.identifier.drac19311871
dc.description.versionPreprint
local.citation.authorGaspar, K.; Casals, M.; Gangolells, M.
local.citation.publicationNameEnergy and buildings
local.citation.volume130
local.citation.startingPage592
local.citation.endingPage599


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Attribution-NonCommercial-NoDerivs 3.0 Spain
Salvo que se indique lo contrario, los contenidos de esta obra estan sujetos a la licencia de Creative Commons : Reconocimiento-NoComercial-SinObraDerivada 3.0 España